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3 years ago

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Mathematics

1 answer:

disa [49]3 years ago

7 0

they need to be 8 each sides

well if 4 squares are = to 3 and its a cube then all the sides must be even

so if 3x2=6 and you need the square to have 6 as its sides then you need to get 4x2 which = 8

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A circle has a circumfernce of 13 it has a arc length of 11. What is the central angle of the arc in degrees

tatiyna

Answer: 304.6°

Step-by-step explanation:

First of all, using the circumference of the circle formula to find the radius of the circle.

Circumference of the circle = 13, ie

2πr = 13,

r = 13/2π ---------------------------- 1

Now getting the radius of the circle now, you now substitute for this in the formula for finding the length of an arc to get the central angle.

Arc length = 11 , ( 2πr0°/360) or (πr0°/180), so

πr0°/180 = 11 ------------------------ 2

Now solve for 0°, the central angle of the angle by making it the subject of the formula.

πr0° = 180 x 11

0° = 180 x 11

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πr

Now, put equation 1 in equation 3 and solve.

0° = 1980

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π x 13/2π

= 1980 x 2π

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π.x. 13

= 1980 x 2

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= 3960/13

= 304.6°

Therefore, the central angle of the arc is 304.6°

Please be meticulous and understand the way I change the r in the denominator. It was the rule in fraction when dividing.

5 0

3 years ago

11) Which shows another way to write 6%?<br> A) 6<br> B) -6<br> C) 0.06<br> D) six tenths

Ainat [17]

Answer:

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7 0

3 years ago

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Prove that x-y = √(x+y)^2-4xy?

Svetlanka [38]

Proved Below

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6 0

2 years ago

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nata0808 [166]

Answer:

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Step-by-step explanation:

5 0

3 years ago

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HELP PLEASEEE. I DONT UNDERSTAND

Shtirlitz [24]

Answer:

Step-by-step explanation:

So we have the equation:

$x^2-6x+58=0$

And we want to solve for x.

We can solve it by completing the square.

First, subtract 58 from both sides:

$x^2-6x=-58$

Divide the b term by 2 and square it:

$(-6)/2=-3\\(-3)^2=9$

So, add 9 to both sides:

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$x-3=\pm \sqrt{-49}$

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Add 3 to both sides:

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So, our answer is D.

And we're done!

4 0

3 years ago